Bonding the array frame on house roof

[infinity]

Came across an install today neat job but the array frame had been bonded back to the MET on a TNC-s system, in these cases i usually take down to a stake or to the MET in a TN-s,

What would the actual implications of this be in reality other than not by the book? I cant think of a scenario it would cause a problem?

 

[SolarCity]

In reality it wouldn't be an issue. I think the whole thing comes from the old DNO ruling that you couldn't take the PME outside of the property.

 

[infinity]

But in reality is the roof really outside the property? i can understand not taking the PME to a shed or separate garage, but the roof? Where the potential would be the same if you were to touch it, surely staking it then gives the array frame a potential difference to that of the property and local land around it?

 

[dansk]

it depends if your swinging from a alu ladder or not, or are you hanging out the velux holding one hand on the radiator?

 

[infinity]

IN which case bonding the array to a PME MET would be more appropriate?

 

[Earthstore]

IN which case bonding the array to a PME MET would be more appropriate?

If you can touch the array from inside the house, IE through a velux, or window, then back to the MET, if you can't then earth rod, because you would be bringing a potential into the house.

 

[dansk]

yep, no velux in roof, its pme to house and your up the ladder touch the panels and the ladder, which one would you be wishing for then? i would prefer the array to be bonded the rod.